====== TTP01-16 Top Quark Spin Correlations at Hadron Colliders: Predictions at Next-to-Leading Order QCD ======
 
 
   <hidden TTP01-16  Top Quark Spin Correlations at Hadron Colliders: Predictions at Next-to-Leading Order QCD > The collider experiments at the Tevatron and the LHC will allow for detailed
     investigations of the properties of the top quark. This requires precise predictions of
     the hadronic production of $t\bar t$ pairs and of their subsequent decays. In this
     Letter we present for the reactions $p {\bar p}, p p \to t{\bar t} + X \to \ell^+\ell'^-X$
     the first calculation of the dilepton angular distribution at next-to-leading order
     (NLO) in the QCD coupling, keeping the full dependence on the spins of the
     intermediate $t\bar{t}$ state. The angular distribution reflects the degree of
     correlation of the $t$ and $\bar t$ spins which we determine for different choices of
     $t$ and $\bar t$ spin bases. In the case of the Tevatron, the QCD corrections are
     sizeable, and the distribution is quite sensitive to the parton content of the proton.
 </hidden>
|**W. Bernreuther, A. Brandenburg, Z. G. Si,  P. Uwer**  | 
|**  Phys. Rev. Lett.  87 242002 2001  **  |
| {{preprints:2001:ttp01-16.pdf|PDF}} {{preprints:2001:ttp01-16.ps|PostScript}} [[http://arxiv.org/abs/hep-ph/0107086|arXiv]]   |
| |